Power glue-spreading machine.



No. 673,4.m-

POWER GLUE SPREADING MACHINE.

(Appl'imim med mz. 22, 1900.) (No Model.)

. 1 llllllllllllll. Y ..1 ||||||||||||||v1 i 4 ll///l/MI,....lllllllllll ///l//lll IIIIIIIHIHIIIII Ens co, Fnmcxumm wAsmNoYoUNITED STATES PATENT OFFICE.

AARON S. NICHOLS, OF CHICAGO, ILLINOIS.

POWER GL'UE-SPREADING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 673,410, dated May 7,1901. Application filed October 22, 1900. Serial No. 34,001. (No model.)

To @Zt whom. tt may concern:

Be it known that LAARON S. NICHOLS, a citizen of the United States,residing in Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Power Glue-Spreading Machines,of whichV the following is a specification.

This invention relates to the construction of machines for spreadingglue on the surfaces of boards which are to be glued to other boards orstock.

The object of the invention is to provide a construction whereby it isrendered wholly unnecessary that the Spreading-rolls, or either of them,be internally heated.

In my improved machine I employ a powerdriven roll below the path of thestock to be glued, a tank of glue in which this roll re` volves, and anupper roll-driven from the lower roll and adapted to come in contactwith the lower roll, so as to be charged with glue thereby when no stockis passing, and a steam or Water heated outer hood placed over the upperroll and inclosing it as nearly as may be, so that the glue upon'itdoesnot become chilled or thickened prior to its contact with the stockoperated upon. The upper roll is supported in sliding bearings and isfree to rise to any extent rendered necessary by the thickness of thestock, and it is also readily removable When the stock is to be gluedupon one side only, and the hood is also readily removable to permit thetaking out of t-he upper roll.

The nature of my improvements is fully described in the descriptiongiven below and illustrated in the accompanying drawings, in which-Figure 1 is a side elevation, partly in section, of the machine. Figs. 2and 3 are sections on the lines 2 2 and 3 3, respectively, of Fig. 1.

In said drawings,A represents a tank for the liquid glue, supported uponsuitable framework B. At opposite sides of the tank are uprightstandards C, in which the gluingrollers are journaled. The lower roll Dis mounted upon the shaft F., and this shaft is driven in any suitablemanner by pulleys or otherwise. The power means for driving the .tentnecessitated by the thickness of the stock,

and in practice it is lifted with each piece of stock which is passedthrough and .falls between times, so as to be charged by the lower roll.The shaft E carries a gear J, and the shaft G carries a like gear K.These gears intermesh, so as to secure the driving of the upper roll;but their teeth are cut deep, so that the various changes in position bythe upper roll while operating will not destroy the mesh.

Instead of heating the upper roll internally, as has been the customheretofore, I place over it a steam or water heated hood,`which will actto keep the roll sufficiently warm to prevent the glue on it fromchilling or thickening. This hood is made with double Walls, except atthe ends, thereby forming an inclosed steam or water space L, and theheating agent is admitted to this space L by the supply-pipe M, and thewater of condensation is drawn off bythe pipe N. In the preferredconstruction of the hood I take channel-irons O,bend them intosemicircular form, and apply an outer covering P, an inner covering Q,(both bent to conform to the channel-iron,) and ends R, which are simplycut into form. At both sides the space L is closed at the bottom, aswill be understood. The hood is adapted to be thrown back out ofoperating position, as indicated in dotted lines in Fig. l, and topermit this without disturbance of the steam or water connections Iinsert in each of these connections a swingjoint T, preferably the jointdescribed in Letters Patent of the United States No. 652,789, of July 3,1900, to Adolph Leitelt, Jr. The hood is supported upon its pipeconnections by means of the lateral arms C', extending from thestandards C, and its move- IOO joints located at one side of the hood,whereby the hood is adapted to be swung away from 1o its acting positiona'fy will, substantially as Specified.

AARON S. NICHOLS.

Witnesses:

EDW. S. EVARTS, I-I. MUNDAY.

